2010/07/15 by A. I. Ryabinkov, A. D. Kaminker
Physics and Astronomy · #Absorption (acoustics) #Amplitude #Astronomy #Astrophysics #Cosmology #Cosmology and Gravitation Theories #Dimensionless quantity #Galaxies: Formation, Evolution, Phenomena #Galaxy #Geometry #Line (geometry) #Line-of-sight #Optics #Physics #Quantum mechanics #Quasar #Redshift #Spectral line #Stellar, planetary, and galactic studies #Universe #astro-ph.CO
paper · pdf · doi:10.1007/s10509-010-0448-1
AASTeX, 13 pages, with 9 figures, Accepted for publication in Astrophysics & Space Science
arxiv created 2010/07/15 · arxiv updated 2010/07/16 · openalex publication_date 2010/08/31 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The spatial-temporal distribution of absorption-line systems (ALSs) observed in QSO spectra within the cosmological redshift interval z = 0.0--4.3 is investigated on the base of our updated catalog of absorption systems. We consider so called metallic systems including basically lines of heavy elements. The sample of the data displays regular variations (with amplitudes ~ 15 -- 20%) in the z-distribution of ALSs as well as in the eta-distribution, where eta is a dimensionless line-of-sight comoving distance, relatively to smoother dependences. The eta-distribution reveals the periodicity with period Delta eta = 0.036 +/- 0.002, which corresponds to a spatial characteristic scale (108 +/- 6) h(-1) Mpc or (alternatively) a temporal interval (350 +/- 20) h(-1) Myr for the LambdaCDM cosmological model. We discuss a possibility of a spatial interpretation of the results treating the pattern obtained as a trace of an order imprinted on the galaxy clustering in the early Universe.